The Must-Attend

Open Infrastructure Event

The open infrastructure landscape is changing, and so is the Summit. Now that users are integrating dozens of open source tools into a modern stack that reaches well beyond the scope of OpenStack, we’re re-organizing the event to focus on specific problem domains like container infrastructure, edge computing and CI/CD and we are focusing on the hard work of integrating all of these tools developed in disparate communities. This is the essential work of 2018 and beyond, to ensure that open infrastructure is truly a viable path for operators.

The Must-Attend

Open Infrastructure Event

Join the movement behind the most widely deployed open source cloud platform. Whether you are pursuing a private, hybrid or multi-cloud approach, the OpenStack Summit is the place to network, skill up and plan your cloud strategy.

Barcelona, Spain

October 25-28, 2016

Event Details

CERN has been running a production OpenStack Cloud for several years. It was based on Nova Network from the start, with a few changes on the upstream code to adapt to the specifics of our internal networking infrastructure.

With more than 6000 hypervisors split in tens of cells, 20000 virtual machines and an heterogeneous setup (KVM and HyperV) moving to Neutron with minimal disruption to users posed a significant challenge.

In this talk we'll describe the Neutron plugin we wrote to integrate with our infrastructure, and additional extensions added to take into account network partitions (now covered with the upcoming segments feature being added upstream). We'll cover how we deployed Neutron and how we first enabled it in new cells, and later migrated existing cells once we were confident with the setup and sure it would scale. Finally we'll cover the new features we're looking into or have already enabled, such as Floating IPs, LBaaS and others.

What can I expect to learn?

Attendees will learn the details of how we prepared and execution the migration from Nova Network to Neutron at CERN. They will also learn how a relevant change like this, with high risk of disruption to end users, can be done on a large cloud deployment.

Ricardo Rocha is a software engineer at CERN. He's currently a member of the CERN OpenStack team, focusing on networking and and container deployments. Previous work included development of data storage, bookkeeping and monitoring services for the LHC Computing Grid (LCG). FULL PROFILE

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